Family name Chan Chai (ชาญไชย 
, ชาญชาย , Chan Chai 
) , worldwide, is a rare cognomen. The surname Chan Chai is characteristic of Thailand, where it is a rare surname, Australia, where it is a very rare surname, and Malaysia. More prevalently, Chan Chai is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| ชานไชย, ชาญไชย, ชาญชาย | Thailand |
| Chan Chai | Australia, Malaysia, Singapore |